#728: data_creator.py, replace 'datetime.now' -> 'datetime.utcnow()'
#728: data_creator.py, change column definition 'TEXT' -> 'DATETIME'
#728: data_creator.py, add comment
Merge pull request #731 from jeff1evesque/python_data_creator

#728: Replace 'datetime.now()' -> 'datetime.utcnow()'